Wormherder Creek Tracer Experiment

A tracer experiment in the Wormherder Creek wetland, Antarctica was designed to quantify the extent of surface water and shallow groundwater mixing. On January 8, 2009, we conducted a tracer injection with a solution of lithium chloride (LiCl, 5.2 kg/20L) and sodium bromide (NaBr 889 g/20L) dissolved in 20 L of distilled water, corresponding to concentrations of 6.25 M Li+ and Cl-, 0.43 M Na+ and Br-. A 2-hour continuous injection of the tracer solution at an injection rate of 120 mL/min was conducted in the small stream that originated from a spring located above the wetland.. At this site, the stream flowed over a cobble substrate around large boulders and had an average a width of about 0.5 m and an average depth of 8 cm, corresponding to an estimated cross-sectional area of 0.04 m2. This resource contains water chemistry data from water samples collected from surface waters and shallow groundwaters. Additionally, geospatial data specifying the location of sample sites is provided. Data are currently being used to assemble a forthcoming publication, expected publication circa May 2019. Until this manuscript is published, the data resource will remain private and only manuscript authors will have access.本数据集源自南极Wormherder Creek湿地的一项示踪试验，该试验旨在量化地表水与浅层地下水的混合范围。2009年1月8日，我们开展了示踪剂注入作业：将溶解于20升蒸馏水的氯化锂（LiCl，5.2 kg/20L）与溴化钠（NaBr，889 g/20L）混合溶液作为示踪剂注入液，此时溶液中Li+与Cl-浓度为6.25 M，Na+与Br-浓度为0.43 M。我们以120 mL/min的注入速率，对源自湿地上方一处泉眼的小型溪流进行了持续2小时的示踪剂溶液注入。该溪流以卵石为底床，流经大型巨砾之间，平均宽度约0.5 m，平均水深8 cm，估算横截面积为0.04 m²。 本数据集包含从地表水与浅层地下水采集的水样的水化学数据，同时提供了标注采样点位置的地理空间数据。 目前该数据集正用于筹备预计于2019年5月左右发表的学术论文。在该手稿正式发表前，本数据资源将保持私密状态，仅论文作者可获取访问权限。